kriswiner
commented
2 years ago I assume you are looking for 1) quaternions and/or Euler angles and 2) high accuracy and 3) low power? This https://www.tindie.com/products/onehorse/usfsmax-module-and-carrier/ is the best available (< 0.5 deg rms heading accuracy), this https://www.tindie.com/products/onehorse/max32660-motion-co-processor/ is really good (also <0.5 degree rms heading accuracy but heat sensitive), and this https://www.tindie.com/products/onehorse/ultimate-sensor-fusion-solution-lsm6dsm-lis2md/ is pretty good (<2 degree rms heading accuracy). All use a co-processor to take the load off of the host MCU and are easy to use. Either is way better than the BNO055 or MPU9250 DMP.
I have heard that the ICM29048 9 DoF IMU is pretty good (about the same as the pretty good option above, but never used it myself). It has the advantage of no co-processor needed but also requires a 1V8 digital rail, so less convenient to use. But if you want something to add to an existing or custom pcb this might be worth a look.
If you want to do Madgwick or Mahony fusion on the ESP32 host you could use the LSM6DSM + MC5983; this is the best combo available although the ICM42688 is also pretty good as a 6 DoF accel/gyro IMU. There is no mag available better than the MC5983, but it does use a bit more power than, say, the LIS2MDL, my second choice.
On Wed, Jun 22, 2022 at 5:29 PM Stephan-Cl @.***> wrote:
Hello Kris, Since you're an expert at that, I was wondering if you had any recommendation for an easy-to-use yet reliable alternative to the above chips, as those are no longer available. I'm looking for an I2C-based, ready-to-go board to interface with an ESP32. The chip should also have some sort of library (Arduino or such) to quickly get me going. Any help appreciated.
Regards,
S. Clark
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Stephan-Cl
StayYouth1993
Hello Kris, Since you're an expert at that, I was wondering if you had any recommendation for an easy-to-use yet reliable alternative to the above chips, as those are no longer available. I'm looking for an I2C-based, ready-to-go board to interface with an ESP32. The chip should also have some sort of library (Arduino or such) to quickly get me going. Any help appreciated.
Regards,
S. Clark